def blitBoard(self):

		self.clearBoard()

		# draws lines to board background
		for i in range(5):
			# horizontal lines
			pygame.draw.line(self.board_background, BLACK, (0, (BOARD_SIZE[1]/5)*i), (BOARD_SIZE[0], (BOARD_SIZE[1]/5)*i), 2)
			for j in range(5):
				# vertical lines
				pygame.draw.line(self.board_background, BLACK, ((BOARD_SIZE[0]/4)*j, BLOCK_SIZE[1]), ((BOARD_SIZE[0]/4)*j, BOARD_SIZE[1]), 2)

		# draws categories and values to block surfaces
		for i in range(4):
			self.categories[i].display(self.block_surface_arr[i*4])
			self.board_background.blit(self.block_surface_arr[i*4], ((BOARD_SIZE[0]/4)*i, 0))
			for j in range(4):
				if not(self.progress[i][j]):
					self.values[j].setLoc(BLOCK_SIZE[0]/2, BLOCK_SIZE[1]/2)
					self.values[j].display(self.block_surface_arr[(i*4)+j+1])
					self.board_background.blit(self.block_surface_arr[(i*4)+j+1], ((BOARD_SIZE[0]/4)*i, (BOARD_SIZE[1]/5)*(j+1)))